A method for manufacturing a crosslinked polyolefin separator and the crosslinked polyolefin separator obtained therefrom are provided. The method includes non-grafted polyolefin having a weight average molecular weight of 300,000 or more and silane-grafted polyolefin having a weight average molecular weight of 300,000 or more. The method minimizes gel formation, a side reaction occurring in an extruder during the manufacture of the separator, and provides the separator having a uniform surface.

A flexible cellular foam or fabric product is coated with a coating including highly thermally conductive nanomaterials. The highly thermally conductive nanomaterials may be carbon nanomaterials, metallic, or non-metallic solids. The carbon nanomaterials may include, but are not necessarily limited to, carbon nanotubes and graphene nanoplatelets. The highly thermally conductive nanomaterials may include but are not limited to nano-sized solids that may include graphite flakes, for example. When coated on a surface of flexible foam, the presence of nanomaterials may impart greater thermal effusivity, greater thermal conductivity, and/or a combination of these improvements. The flexible foam product may be polyurethane foam, latex foam, polyether polyurethane foam, viscoelastic foam, high resilient foam, polyester polyurethane foam, foamed polyethylene, foamed polypropylene, expanded polystyrene, foamed silicone, melamine foam, among others.

There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).

A method for producing a porous film having a water content percentage of less than 1000 ppm, the method including the steps of: (1) obtaining a porous film (A) having a water content percentage of not less than 1000 ppm; (2) obtaining a package by causing the obtained porous film (A) and a drying agent to be contained in a water vapor barrier packaging container and sealing the water vapor barrier packaging container; and (3) storing the obtained package.

A method for producing a porous film having a water content percentage of less than 1000 ppm, the method including the steps of: (1) obtaining a porous film (A) having a water content percentage of not less than 1000 ppm; (2) obtaining a package by causing the obtained porous film (A) and a drying agent to be contained in a water vapor barrier packaging container and sealing the water vapor barrier packaging container; and (3) storing the obtained package.

A moisture barrier layer-foamed polymeric composite sheet underlayment article comprising a foamed polymeric sheet and a moisture barrier layer adhered thereto is disclosed. In one aspect, cork particles are present in the composite.

Provided are a heat-resistant synthetic resin microporous film that has both good heat resistance and good mechanical strength and exhibits a suppressed decrease in mechanical strength over time, and a method for producing the heat-resistant synthetic resin microporous film. The heat-resistant synthetic resin microporous film of the present invention includes a synthetic resin microporous film, and a coating layer formed on at least part of the surface of the synthetic resin microporous film and containing a polymer of a polymerizable compound having two or more radically polymerizable functional groups per molecule. The maximum thermal shrinkage rate of the heat-resistant synthetic resin microporous film when heated from 25° C. to 180° C. at a temperature rising rate of 5° C./min is 15% or less. The piercing strength thereof is 0.6 N or more. The rate of retention of the piercing strength after heating at 70° C. for 168 hours is 85% or more.

The present invention discloses novel porous polymeric compositions comprising random copolymers of amides, imides, ureas, and carbamic-anhydrides, useful for the synthesis of monolithic bimodal microporous/macroporous carbon aerogels. It also discloses methods for producing said microporous/macroporous carbon aerogels by the reaction of a polyisocyanate compound and a polycarboxylic acid compound, followed by pyrolytic carbonization, and by reactive etching with CO.sub.2 at elevated temperatures. Also disclosed are methods for using the microporous/macroporous carbon aerogels in the selective capture and sequestration of carbon dioxide.

Biologically activated ion-exchange polymer salts are made by exchanging biologically active ionic agents onto ion-exchange polymers. The activated polymers are uniquely surface active and stable to thermal degradation and chemical and other forms of decomposition. The activated ion-exchange polymer salts may be processed and combined with polymer precursors using novel methods and materials to produce stable, biologically activated polymer composites, including antimicrobial and antifouling polymer composites.

The compressible sealing element (1) comprises at least one piece made of a resilient foam (17). This foam has an open-cell content of at least 50% and has such a hardness that it requires a force of less than 2000 N to compress the sealing element (1) per meter length thereof to such an extent that the volume of a rectangular cuboid circumscribing the sealing element is reduced by 40%. The sealing element comprises a water-impermeable cover layer (18) which extends at least over its top surface. The sealing element is intended for filling at least partially the gaps between the stock rails (13) and the switch rails (12) in a railway switch to prevent the switch from being blocked in particular by snow. Advantages of the new sealing element is that it can easier be inserted in these gaps and that it has a smaller effect on the force required to close the switch so that it can also be applied closer to the free extremity of the switch rail (12).